no. generally speaking acoustic drums are a chore to synthesize (and the snare especially). i know native instruments came out with some decent snare synthesizer for maschine, you can find a few demo on NI website and youtube, but they were a team of dev working full hours on that thing, and it still sounds pretty obvious that it's a synth. the kick synth on the other hand sounds realistic enough to me.

for the rest i never heard of any dnb producers clearing their sample, though if do not have an ear on the ground in the field, but since all of these producers are relatively unknown and they sampled a small part of the tune, i don't see the copyright owners going after each one to reclaim a few penny's.

here is what you can see on the wikipedia page of the amen break :

"Neither the performer, drummer G. C. Coleman, nor the copyright owner Richard L. Spencer have ever received any royalties or clearance fees for the use of the sample, nor has either sought royalties.[3] Spencer considers musical works based on the sample to be both "plagiarism"[4] and "flattering".[5]"

so you can sample that snare without fear... if you have bad consciousness for sampling the work of others, you can always edit, layer and process that sample to make it your own, and the more important part : make an awesome tune with it .